Question

Evaluate :
2/3+-4/5-1/3-2/5​

Answer 1

Answer:

Here is your answer of your question.

Answer 2

Answer:

I will assume you wish to evaluate the limit when n goes to infinity.

With respect to this specific expression, that doesn’t make sense when you are working with real numbers. To see why, introduce function

$f$

$defined \: by \:  f(k)= \sqrt{k + ( - 1) {}^{k} \sqrt{k + 1} }$

$Then f(k)= \: \sqrt{k \times ( - 1) {}^{k} f \: (k + 1)}.in$

$particular f(k)≥0$

The expression to be evaluated is

$f(1)=1−f(2)√f(1)=1−f(2).$